CalpreneВ® 411 Thermoplastic rubber SBS dry CalpreneВ® 411 is a 70/30 Butadiene/Styrene Thermoplastic Copolymer, polymerized in solution and has a radial structure. Presentation C411    Porous crumb C411C  Porous pellet  C411M  Powder form dusted with amorphous silica Main Applications Asphalt Modification (Paving and Roofing) and Compounding. Documents TDS   MSDS   Characteristics Property Unit Value Structure --- Radial Styrene % 30  Bookfield Viscosity cps 18 500 TSV cSt 26 Volatile matter % 0.4 Hardness  oShore A  80